CINEMATIC MOTION BLUR IN THE FIELD, NO FILTER SWAPS MID-SHOOTThe K&F Concept Variable ND2-32 Filter for GoPro Hero 9-13 Nano-X Series |KF01.1870 is built for action camera users who want cinematic motion blurwithout the workflow friction of swapping fixed-density filters mid-shoot. Itcovers the 1-5 stop range (ND2 through ND32) via a rotating dial, handling thelight levels you encounter during typical outdoor activities from partly cloudythrough full sun. The push-in fit with rotation lock installs in seconds withouttools or adhesive, and the 7g weight adds negligible bulk to a helmet or chestmount. The 28-layer nanometre coating delivers 0.2% reflectivity and repelswater, oil, and dust, critical for shooting in spray, rain, or dusty conditionswhere uncoated glass would fog or smear. The 5mm filter thickness avoidsvignetting on the GoPro's ultra-wide field of view across 16:9, 4:3, and 8:7sensor modes, so you can switch between standard video and vertical reelswithout cropping or corner darkening.Variable density range for changing lightThe ND2-32 range lets you dial in the exact shutter speed for motion blur aslight conditions shift during a ski run or surf session. Action cameras defaultto fast shutter speeds to freeze motion, which produces sharp but clinicalfootage. A variable ND filter reduces incoming light so you can drop shutterspeed and introduce motion blur, turning a static waterfall into silky flow oradding wheel-spin blur to a downhill mountain bike shot. The dial adjustmentring rotates through the ND range with tactile detents at each stop, allowingone-handed adjustment without removing the camera from its mount. You canfine-tune exposure mid-activity without stopping to dismount the camera or pullout your phone, adjusting ND strength while riding a chairlift between runs asthe sun breaks through clouds.GoPro Hero 9-13 Black compatibilityThe push-in fit with rotation lock is designed specifically for the Hero 9, 10,11, 12, and 13 Black lens housing geometry. It installs in seconds without toolsor adhesive, so you're not fumbling with thread adapters on a cliffside or boatdeck. The filter attaches directly to the bare lens housing and cannot mountover GoPro's waterproof housing or dive case. For surface water sports likesurfing or kayaking where the camera is exposed to spray but not submerged, thewaterproof coating handles moisture without the housing.Optical quality and coating durabilityThe filter uses imported AGC optical glass with uniform density across theentire surface to prevent colour shifts or hotspots as the ND strength changes.It delivers neutral colour rendition from ND2 through ND32 without the green ormagenta cast that cheaper variable NDs introduce at higher stops, so you're notfighting colour correction in post when grading footage from a full day ofskiing where you've rotated through the entire ND range as cloud cover changed.The 28-layer nanometre coating reduces surface reflectivity to 0.2% and repelswater, oil, dust, and fingerprints through molecular-level hydrophobictreatment. It maintains contrast and colour accuracy in spray, rain, or dustyconditions where uncoated glass would fog or smear, shooting whitewater kayakingor coastal surf where salt spray hits the lens every few seconds.Scratch resistance for field useThe hardened surface treatment resists abrasion from sand, rock dust, and packfabric during transport and field use. It maintains optical clarity throughseasons of backcountry use where uncoated glass would accumulate micro-scratchesthat degrade image sharpness. You can toss the camera into a backpack sidepocket on a trail run without worrying about grit damaging the filter. Theincluded storage case is a rigid protective case with foam insert that preventsimpact damage and keeps the filter clean when not mounted, protecting it duringtravel and between activities so it's ready to use without cleaning every timeyou pull it out. The microfibre cleaning cloth gives you a safe cleaning methodin the field without risking coating damage from shirt fabric or paper towels.No vignetting across sensor modesThe 5mm filter thickness keeps the optical stack thin enough to avoid vignettingon the GoPro's ultra-wide 155° field of view. The optical geometry and frameprofile are engineered to stay outside the GoPro's sensor field of view at allfocal lengths and aspect ratios, so the filter works across 16:9, 4:3, and 8:7sensor modes without cropping or corner darkening. You can switch betweenstandard video and vertical reels on the same ride without swapping filters oraccepting frame loss, filming POV footage on a helmet mount where any vignettingwould ruin the immersive wide-angle effect.Lightweight aluminium constructionThe aluminium alloy frame keeps the filter lighter than most lens caps whilemaintaining structural rigidity. It adds negligible weight to a helmet or chestmount, so you don't notice it during high-movement activities like wearing ahelmet mount through a full day of rock climbing without neck fatigue fromfront-heavy gear. The aluminium construction survives drops and impacts thatwould crack plastic frames, so the filter lasts through multiple seasons of harduse, bouncing the camera off rocks during a trail running fall withoutdestroying the filter.The K&F Variable ND2-32 Filter for GoPro Hero 9-13 Black | KF01.1870 is builtfor adventure filmmakers and content creators who need cinematic motion blur inbright conditions without the workflow friction of swapping fixed-densityfilters. With imported AGC optical glass, 28-layer nanometre coatings, and a 7galuminium frame, it's a durable, field-ready tool that handles the light levelsyou encounter during typical outdoor activities. Order the KF01.1870 today andbring motion blur to your action footage with confidence.Technical Specifications: - Filter Type: Variable ND (ND2-32) - Stop Range: 1-5 stops - Glass Material: Imported AGC optical glass - Coating: 28 multi-layer nanometre coatings (0.2% reflectivity) - Coating Properties: Waterproof, scratch-resistant, dustproof, oil-proof - Frame Material: Aluminium alloy - Filter Thickness: 5mm - Weight: 7g - Installation: Push-in fit with rotation lock - Adjustment Method: Dial ring for variable density control
.jpg)
